Iam really bad at math can someone and explain ?

For this case we have the following expression:
 root (10) ^ ((3/4) x)
 Rewriting we have:
 root (10) ^ ((1/4) 3x)
 By power properties we can rewrite the expression as:
 (8 ^ root (10)) ^ (3x)
 
 The equivalent expression is:
 (8 ^ root (10)) ^ (3x)
 option 4

I’m confused as to what you are asking 66 2/3 percentage wise